Executive Summary
Summary | |
---|---|
Title | pam security update |
Informations | |||
---|---|---|---|
Name | RHSA-2010:0891 | First vendor Publication | 2010-11-16 |
Vendor | RedHat | Last vendor Modification | 2010-11-16 |
Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
---|---|---|---|
Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C) | |||
---|---|---|---|
Cvss Base Score | 6.9 | Attack Range | Local |
Cvss Impact Score | 10 | Attack Complexity | Medium |
Cvss Expoit Score | 3.4 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated pam packages that fix three security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: Pluggable Authentication Modules (PAM) provide a system whereby administrators can set up authentication policies without having to recompile programs that handle authentication. It was discovered that the pam_namespace module executed the external script namespace.init with an unchanged environment inherited from an application calling PAM. In cases where such an environment was untrusted (for example, when pam_namespace was configured for setuid applications such as su or sudo), a local, unprivileged user could possibly use this flaw to escalate their privileges. (CVE-2010-3853) It was discovered that the pam_env and pam_mail modules used root privileges while accessing user's files. A local, unprivileged user could use this flaw to obtain information, from the lines that have the KEY=VALUE format expected by pam_env, from an arbitrary file. Also, in certain configurations, a local, unprivileged user using a service for which the pam_mail module was configured for, could use this flaw to obtain limited information about files or directories that they do not have access to. (CVE-2010-3435) Note: As part of the fix for CVE-2010-3435, this update changes the default value of pam_env's configuration option user_readenv to 0, causing the module to not read user's ~/.pam_environment configuration file by default, as reading it may introduce unexpected changes to the environment of the service using PAM, or PAM modules consulted after pam_env. It was discovered that the pam_xauth module did not verify the return values of the setuid() and setgid() system calls. A local, unprivileged user could use this flaw to execute the xauth command with root privileges and make it read an arbitrary input file. (CVE-2010-3316) Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for reporting the CVE-2010-3435 issue. All pam users should upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 637898 - CVE-2010-3316 pam: pam_xauth missing return value checks from setuid() and similar calls 641335 - CVE-2010-3435 pam: pam_env and pam_mail accessing users' file with root privileges 643043 - CVE-2010-3853 pam: pam_namespace executes namespace.init with service's environment |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2010-0891.html |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:19576 | |||
Oval ID: | oval:org.mitre.oval:def:19576 | ||
Title: | VMware ESX/ESXi SLPD denial of service vulnerability and ESX third party updates for Service Console packages bind, pam, and rpm. | ||
Description: | pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the environment of the invoking application or service during execution of the namespace.init script, which might allow local users to gain privileges by running a setuid program that relies on the pam_namespace PAM check, as demonstrated by the sudo program. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2010-3853 | Version: | 4 |
Platform(s): | VMWare ESX Server 4.1 VMWare ESX Server 4.0 | Product(s): | |
Definition Synopsis: | |||
|
Definition Id: oval:org.mitre.oval:def:19932 | |||
Oval ID: | oval:org.mitre.oval:def:19932 | ||
Title: | VMware ESX/ESXi SLPD denial of service vulnerability and ESX third party updates for Service Console packages bind, pam, and rpm. | ||
Description: | The run_coprocess function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) before 1.1.2 does not check the return values of the setuid, setgid, and setgroups system calls, which might allow local users to read arbitrary files by executing a program that relies on the pam_xauth PAM check. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2010-3316 | Version: | 4 |
Platform(s): | VMWare ESX Server 4.1 VMWare ESX Server 4.0 | Product(s): | |
Definition Synopsis: | |||
|
Definition Id: oval:org.mitre.oval:def:20251 | |||
Oval ID: | oval:org.mitre.oval:def:20251 | ||
Title: | VMware ESX/ESXi SLPD denial of service vulnerability and ESX third party updates for Service Console packages bind, pam, and rpm. | ||
Description: | The (1) pam_env and (2) pam_mail modules in Linux-PAM (aka pam) before 1.1.2 use root privileges during read access to files and directories that belong to arbitrary user accounts, which might allow local users to obtain sensitive information by leveraging this filesystem activity, as demonstrated by a symlink attack on the .pam_environment file in a user's home directory. | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2010-3435 | Version: | 4 |
Platform(s): | VMWare ESX Server 4.1 VMWare ESX Server 4.0 | Product(s): | |
Definition Synopsis: | |||
|
CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
---|---|
2012-08-10 | Name : Gentoo Security Advisory GLSA 201206-31 (pam) File : nvt/glsa_201206_31.nasl |
2012-03-16 | Name : VMSA-2011-0004.3 VMware ESX/ESXi SLPD denial of service vulnerability and ESX... File : nvt/gb_VMSA-2011-0004.nasl |
2011-06-06 | Name : Ubuntu Update for pam USN-1140-1 File : nvt/gb_ubuntu_USN_1140_1.nasl |
2011-06-06 | Name : Ubuntu Update for pam USN-1140-2 File : nvt/gb_ubuntu_USN_1140_2.nasl |
2010-12-02 | Name : Fedora Update for pam FEDORA-2010-17155 File : nvt/gb_fedora_2010_17155_pam_fc14.nasl |
2010-11-23 | Name : Fedora Update for pam FEDORA-2010-17133 File : nvt/gb_fedora_2010_17133_pam_fc12.nasl |
2010-11-16 | Name : RedHat Update for pam RHSA-2010:0819-01 File : nvt/gb_RHSA-2010_0819-01_pam.nasl |
2010-11-16 | Name : Fedora Update for pam FEDORA-2010-17112 File : nvt/gb_fedora_2010_17112_pam_fc13.nasl |
2010-11-16 | Name : Mandriva Update for pam MDVSA-2010:220 (pam) File : nvt/gb_mandriva_MDVSA_2010_220.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
---|---|
68994 | Linux-PAM pam_xauth Module run_coprocess() Function Process Limit Bypass Linux-PAM contains a flaw that may allow an attacker to gain access to unauthorized privileges. The issue is triggered when the "pam_xauth" module incorrectly checks the return values of the "setuid()" and "setgid()" functions when dropping privileges, allowing a remote attacker to gain escalated privileges. |
68993 | Linux-PAM pam_mail Module Arbitrary Mail File Enumeration Linux-PAM contains a flaw that may lead to an unauthorized information disclosure. Â The issue is triggered when an error in the 'pam_mail' module occurs when dropping privileges, which will disclose the presence of certain mail files to a local attacker. |
68992 | Linux-PAM pam_namespace Module namespace Init Script Environment Handling Loc... Linux-PAM contains a flaw that may allow an attacker to gain access to unauthorized privileges. The issue is triggered when an error in the 'pam_namespace' module when executing the namespace init script occurs, allowing a local attacker to use crafted environment variables when running a setuid program to gain elevated privileges. |
Information Assurance Vulnerability Management (IAVM)
Date | Description |
---|---|
2011-05-12 | IAVM : 2011-A-0066 - Multiple Vulnerabilities in VMware Products Severity : Category I - VMSKEY : V0027158 |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2016-03-04 | Name : The remote VMware ESX / ESXi host is missing a security-related patch. File : vmware_VMSA-2011-0004_remote.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_pam-111025.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2010-0891.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2010-0819.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20101101_pam_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20101116_pam_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2012-06-26 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201206-31.nasl - Type : ACT_GATHER_INFO |
2011-12-13 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_pam-111025.nasl - Type : ACT_GATHER_INFO |
2011-12-13 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_pam-7814.nasl - Type : ACT_GATHER_INFO |
2011-11-03 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_pam-7815.nasl - Type : ACT_GATHER_INFO |
2011-06-13 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1140-1.nasl - Type : ACT_GATHER_INFO |
2011-06-13 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1140-2.nasl - Type : ACT_GATHER_INFO |
2011-03-08 | Name : The remote VMware ESXi / ESX host is missing one or more security-related pat... File : vmware_VMSA-2011-0004.nasl - Type : ACT_GATHER_INFO |
2010-11-24 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2010-0819.nasl - Type : ACT_GATHER_INFO |
2010-11-18 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2010-0891.nasl - Type : ACT_GATHER_INFO |
2010-11-18 | Name : The remote Fedora host is missing a security update. File : fedora_2010-17133.nasl - Type : ACT_GATHER_INFO |
2010-11-08 | Name : The remote Fedora host is missing a security update. File : fedora_2010-17155.nasl - Type : ACT_GATHER_INFO |
2010-11-05 | Name : The remote Fedora host is missing a security update. File : fedora_2010-17112.nasl - Type : ACT_GATHER_INFO |
2010-11-04 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2010-220.nasl - Type : ACT_GATHER_INFO |
2010-11-02 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2010-0819.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
---|---|
2014-02-17 11:54:04 |
|